JPH0355155Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pushbutton device for switching a mechanism or a switch that operates in a direction different from the direction in which the pushbutton is operated.

Prior Art FIG. 6 shows a conventional push button device for magnetic tape recording and reproducing equipment. In FIG. 6, 16 is a cassette holder for holding a tape cassette, 17 is a tape drive device, 15 is an opening/closing lever, 11 is a push button, 12 is a button lever, 13
1 is a slide pin, 14 is an intermediate lever, and 21 is a tension spring.

The tape drive device 17 is connected to the boss 1 of the rear cabinet.
9a with screws 20, the opening/closing lever 15 can slide vertically, and is held by the tape drive device 17 so as to be constantly pulled downward by a tension spring 21. The cassette holder 16 has a shaft portion 18 integrally formed with the front cabinet 18.
a and the shaft hole 16a formed in the cassette holder 16.
It is held so that it can rotate. The push button 11 is press-fitted into the button lever 12, the slide pin 13 is attached to the button lever 12 by caulking, and the button lever 12 is slidable in the front-rear direction on a guide portion 19b formed integrally with the rear cabinet. is maintained. The intermediate lever 14 is held by a boss 19c integrally formed with the rear cabinet so as to be able to slide up and down by a screw 20 and an oblong hole 14c, and the operating directions of the push button 11 and the opening/closing lever 15 are 90 degrees different. It's on.

The operation of the push button device configured as described above will be explained below.

When the cassette holder 16 is closed, that is, when the lock portion 15b of the opening/closing lever 15 and the lock holding portion 16 of the cassette holder 16 are engaged, pushing the push button 11 in the direction of the arrow causes the button lever 12 and the slider to slide in the same direction. The pin 13 moves, and the cylindrical surface of the slide pin 13 slides on the slope portion 14b of the intermediate lever 14 that is in contact with it, pushing the intermediate lever 14 upward. At the same time, the acting part 14a of the intermediate lever 14 pushes up the arm part 15a of the opening/closing lever 15, and this action causes the lock holding part 16b of the cassette holder 16 to disengage from the locking part 15b of the opening/closing lever 15, and the cassette holder 16 opens. Next, the opening/closing lever 1 is opened and closed by the tension spring 21.
5. The intermediate lever 14, slide pin 13, button lever 12, and push button 11 are restored to their original positions. When closing the cassette holder 16, the outer surface of the lock holding part 16b slides on the slope of the lock part 15 of the opening/closing lever 15 and pushes up the opening/closing lever 15. When the lock holding part 16b passes over the lock part 15b, the tension spring 21 closes the opening/closing lever. 15 is lowered and the cassette holder 16 is locked.

Problems that the invention attempts to solve: However, in the above configuration, pushbutton 1
A component is a screw 20 between the opening/closing lever 15 and the opening/closing lever 15.
5 points are required, including 1 button lever.
2 and the sliding surface of the guide portion 19b, the slide pin 1
In order to reduce frictional resistance, it was necessary to apply grease to the above three points, namely, the contact surface between the intermediate lever 14 and the slope portion 14b of the intermediate lever 14, and the contact surface between the oblong hole 14c and the screw 20 serving as a guide. However, the operating efficiency on each sliding surface is still low, and the pushbutton 1
The operation of 1 requires a large force and the operation is not smooth, and the tension spring 21 is used to restore each component.
There was a problem in that the tensile force had to be increased as well.

The present invention solves the above-mentioned conventional problems, and aims to reduce the number of component parts, enable smooth push button operation, and further reduce the number of assembly steps.

Means for Solving the Problems In order to solve the above problems, the push button device of the present invention integrally forms a guide part and a holding part in the front cabinet, holds the push button rotatably, and controls the mechanical device. The pushbutton is configured to directly switch a lever or switch, etc., and is configured so that the pushbutton can be returned to operation by the elastic force of the convex portion integrally provided on the pushbutton and the holding portion provided on the front cabinet. It is something.

Effects The present invention has the above-described structure, which minimizes the number of component parts and reduces the number of sliding friction points, so that the push button operation can be performed smoothly and the operating force can be reduced. Furthermore, the pushbutton can be held by simply fitting it into the front cabinet, greatly reducing assembly man-hours.

Embodiments Hereinafter, push button devices according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a pushbutton device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.

In Figures 1 and 2, 1 is a push button, 2 is an opening/closing lever, 3 is a tape drive device for recording and playing magnetic tape, 4 is a tension spring, 5 is a cassette holder, and 6 is integrally formed with the rear cabinet. 7 is the front cabinet. The opening/closing lever 2 can be slid in the vertical direction, and a tension spring 4 constantly applies downward tension to the tape drive device 3.
The tape drive device 3 is fixed to a mounting boss of the rear cabinet with screws 8. The cassette holder 5 is rotatably held by a shaft portion 7d formed integrally with the front cabinet 7 and a shaft hole 5a engaged therewith. In the push button 1, the support shaft portion 1a, the left and right position regulating portions 1b, and the support shaft center portion 1d of the push button 1 are engaged with a bearing portion 7a, a button holding portion 7b, and a claw portion 7c, which are formed integrally with the front cabinet 7, respectively. and is held so that it can rotate. The push button 1 is integrally formed with an operating arm portion 1c for transmitting an operation to the opening/closing lever 2. When the cassette holder 5 is in the closed state, the lock holding part 5b formed integrally with the cassette holder catches on the lock part 2b formed integrally with the opening/closing lever 2, so that the cassette holder 5 is held in the closed state. It is composed of

FIG. 3 is a perspective view showing the state when the slope 1f of the push button 1 is pressed, and FIG.
It is a figure showing A cross section.

The operation of the push button device configured as described above will be explained using FIGS. 3 and 4.

First, when the slope 1f of the pushbutton 1 is pressed, the pushbutton 1 rotates around its support shaft, the operating arm 1c pushes up the arm 2a of the opening/closing lever 2, and the lock holding part 5b of the cassette holder 5 is pushed up. The opening/closing lever 2 is released from the lock portion 2b, and the cassette holder 5 is pushed open around the shaft hole 5a by the torsion spring 9. At this time, the button return convex portion 1e provided at the center portion 1d of the support shaft of the push button 1 presses the button holding portion 7b of the front cabinet as the push button 1 rotates.
This holding portion 7b is in a state of being bent within its elastic limit.

Next, when you release your finger from the pushbutton 1 and release the operation, the opening/closing lever 2 is pulled down by the tension force of the tension spring 4, and at the same time, the operating arm 1c of the pushbutton 1 is pulled down. Lever 2 returns to its original state. During this return operation, the elastic force due to the deflection of the button holding portion 7b of the front cabinet 7 acts in the direction of returning the push button 1, so even if there is no return force from the opening/closing lever 2, the push button 1 returns. can do.

FIG. 5 is a diagram showing how the push button 1 is attached to the front cabinet 7, and the method of attaching the push button 1 will be explained with reference to FIG. 2 and FIG.
The pushbutton 1 is attached to the button holding portion 7 of the front cabinet 7.
b is pushed in while being deformed within the elastic limit, the support shaft portion 1a engages with the notch 7d of the button holding portion 7b, and when the claw portion 7c exceeds the center portion 1d of the support shaft, the button holding portion 7b returns to its original position. It returns and the pushbutton 1 is held in place. The position of the push button 1 in the direction of the support shaft is determined by the lateral position regulating portion 1b, which has a larger diameter than the support shaft position a, and the bearing portion 7a. The button holding part 7 prevents the push button 1 from falling off the bearing part 7a.
This is done by integrally forming an angle between the inner surface of b and the inner surface of the claw portion 7c at an acute angle of 90° or less.

When closing the cassette holder 5, the outer surface of the lock holding part 5b pushes up the opening/closing lever 2 while sliding on the outer slope of the locking part 2b of the opening/closing lever 2.
When the lock holding part 5b passes over the lock part 2b, the opening/closing lever 2 is lowered by the tensile force of the tension spring 4, and the cassette holder 5 is locked.

As described above, according to this embodiment, the guide part and the holding part are integrally formed in the front cabinet, and the push button is rotatably held, so that the push button can be used as a lever or switch, etc., which is a part of the mechanical device. The number of component parts is kept to a minimum by allowing direct switching operation, and by configuring the push button to return after operation by the elastic force of the convex part formed integrally with the push button and the holding part provided on the front cabinet. Since the only sliding friction point is the support shaft of the push button, the push button can be operated smoothly and the operating force can be reduced. Furthermore, the push button can be held by simply fitting it into the front cabinet, greatly reducing assembly man-hours.

In this embodiment, the push button 1 operates the opening/closing lever 2, but the push button 1 can also directly operate a switch or the like.

Effects of the invention As described above, the present invention provides a guide part and a holding part in the cabinet to rotatably hold the push button.
The pushbutton is configured to directly switch the lever or switch of a mechanical device, and is configured so that the pushbutton returns after operation due to the elastic force of the protrusion and holding section that are integrally provided on the pushbutton. By doing this, the number of component parts required to operate a lever or switch, etc. that acts in a direction different from the button operation direction can be minimized, and as a result, the number of sliding friction points when operating the push button is also minimized, allowing smooth operation. The operating force of the push button is also reduced. Furthermore, since the operating angle of the push button is small, by making the operating surface of the push button an inclined surface, the operation feels like operating the push button without giving the impression of a rotating mechanism. Furthermore, the pushbutton installation work can be completed by simply fitting it into the guide part and the holding part, so the number of assembly steps can be significantly reduced. As described above, the present invention is extremely effective in improving the quality, performance, and assembly efficiency of equipment.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the push button device of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a perspective view showing a state in which the push button of the present invention is pressed. , Figure 4 is A-A in Figure 3.
FIG. 5 is a sectional view, FIG. 5 is a perspective view showing an attached state of the push button, and FIG. 6 is a perspective view of a conventional push button device. DESCRIPTION OF SYMBOLS 1... Push button, 1a... Support shaft part, 2... Opening/closing lever, 7... Front cabinet, 7a... Bearing part, 7b... Button holding part.

Claims (1)

[Claims for Utility Model Registration] (1) A guide part integrally molded on the cabinet and an elastic claw forming an acute angle groove of 90° or less; and a push button having a pivot shaft that is rotatably held in contact with the push button, and a convex portion provided on the pivot shaft deforms the elastic pawl at the final rotational position of the push button. A push button device characterized in that it returns to a rotation starting position by the generated elasticity. (2) The pushbutton device according to claim 1, wherein the operating surface (pressing surface) of the pushbutton is arranged obliquely with respect to the cabinet surface.